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[proxmark3-svn] / client / proxendian.h
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4e3e51b6 1//-----------------------------------------------------------------------------
2// Copyright (C) 2010 Hector Martin "marcan" <marcan@marcansoft.com>
3//
4// This code is licensed to you under the terms of the GNU GPL, version 2 or,
5// at your option, any later version. See the LICENSE.txt file for the text of
6// the license.
7//-----------------------------------------------------------------------------
8// Endianness convenience functions
9//-----------------------------------------------------------------------------
10
11#ifndef PROXENDIAN_H__
12#define PROXENDIAN_H__
13
14#include <stdint.h>
15
19d9a7b0 16#ifdef _WIN32
4e3e51b6 17# define HOST_LITTLE_ENDIAN
18#else
19# include <sys/types.h>
19d9a7b0 20# ifndef BYTE_ORDER
21# define BYTE_ORDER __BYTE_ORDER
22# define LITTLE_ENDIAN __LITTLE_ENDIAN
23# define BIG_ENDIAN __BIG_ENDIAN
24# endif
4e3e51b6 25# if !defined(BYTE_ORDER) || (BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN)
26# error Define BYTE_ORDER to be equal to either LITTLE_ENDIAN or BIG_ENDIAN
27# endif
4e3e51b6 28# if BYTE_ORDER == LITTLE_ENDIAN
29# define HOST_LITTLE_ENDIAN
30# endif
31#endif
32
33#ifdef HOST_LITTLE_ENDIAN
34# define le16(x) (x)
35# define le32(x) (x)
36#else
37
38static inline uint16_t le16(uint16_t v)
39{
40 return (v>>8) | (v<<8);
41}
42
43static inline uint32_t le32(uint32_t v)
44{
45 return (le16(v)<<16) | (le16(v>>16));
46}
47#endif // HOST_LITTLE_ENDIAN
48
49#endif // PROXENDIAN_H__
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